Intermolecular Forces and Molecules - Interactive Lecture Demonstration En gold-star betyder høj kvalitet, undersøgelsesbacerede aktiviteter som følger PhET's retningslinier.

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Tittel Intermolecular Forces and Molecules - Interactive Lecture Demonstration
Beskrivelse This Interactive Lecture Demonstration Guide has the following goals. Students will be able to: • Use VSEPR theory to construct common molecules; • Sketch electron density and identify partial charges based on molecule geometry and electronegativity; • Distinguish between bond and molecule dipoles; • Classify molecules as polar or non-polar; • Compare and contrast permanent and induced dipoles; • Identify hydrogen-bonding, and discuss its origin in terms of molecule geometry and electronegativity; • Explain properties, such as boiling or melting point, by considering different intermolecular forces; • Relate the relative strength of intermolecular forces with melting point or boiling point data, and with particle-level representations of substances at different temperatures; • Describe the dynamic particle motion in a liquid, including the arrangement and motion of molecules accompanying hydrogen-bonding and ion-dipole interactions; • Explain ion-pairing at the particle-level, and describe how this affects colligative properties.
Emne Kemi
Niveau Bachelor - intro
Type Demonstration
Varighed 60 minutter
Svar inkluderet Nej
Sprog Engelsk
Nøgleord Electrostatic potential, VSEPR, dipoles, electronegativity, intermolecular forces, ion-pairing, molecule geometry, partial charges, phase changes, polar and non-polar molecules
Simuleringer Molekylers polaritet (HTML5), Molekylær polaritet, Molekyleformer (HTML5), Molekyleformer, Stoftilstande (HTML5), Tilstandsformer, Stoftilstande: Basis (HTML5), Tilstandsformer: Indledning, Sukker og saltopløsninger

Forfattere Ted Clark, Julia Chamberlain
Kontakt email
Skole / organisation PhET
Dato for tilmelding 05-11-14
Dato for opdatering 26-07-17